1745_manu

7/25/2019 1745_manu

1/65

1745Power Quality Logger

Users Manual

PN 2560366April 2006 Rev.1, 7/06 2006 Fluke Corporation, All rights reserved.All product names are trademarks of their respective companies.

99 Washington Street

Melrose, MA 02176

Phone781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com
http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/http://www.testequipmentdepot.com/

7/25/2019 1745_manu

2/65

i

Table of Contents

Title Page

Introduction .......................................................................................... 1

Information and PC Software CD..................................................... 1Logger Power Supply ....................................................................... 2Logging Functions ............................................................................ 2Symbols ............................................................................................ 4

Safety Instructions ................................................................................ 4Qualified Personnel........................................................................... 6Standard Equipment and Optional Accessories ................................ 6Features............................................................................................. 8Power Network Configurations ........................................................ 11Working with Logged Data............................................................... 11

Using the 1745 Power Quality Logger.................................................. 12About Logging Jobs.......................................................................... 12Preparing the Logger for Use............................................................ 13

Test Leads - Markings .................................................................. 15Connecting Current Probes ........................................................... 15Logging with Voltage Converters................................................. 15

Connecting the Logger...................................................................... 16Connections in 3-Phase 4-Wire (Wye) Systems ........................... 19Connections in 3-Phase 3-Wire (Delta) Systems .......................... 20Connections for Single-Phase Logging......................................... 21Connections for Medium Voltage Networks................................. 22

Logging............................................................................................. 24Completing the Logging Job......................................................... 24

Evaluating the Logged Data.............................................................. 25Methods of Logging.......................................................................... 25Voltage Ranges ................................................................................. 26

Signal Sampling ............................................................................ 27Resolution Accuracy......................................................................... 27Voltage Variations ............................................................................ 27Averaging Period .............................................................................. 28

Min/Max Values ........................................................................... 29

Voltage Interruptions .................................................................... 30Voltage Dips and Swells............................................................... 31Voltage Harmonics ........................................................................... 31

7/25/2019 1745_manu

3/65

1745Users Manual

ii

Current Harmonics ........................................................................... 32Mains Signaling............................................................................ 32THD V In Function A................................................................ 33Calculation of THD in Measuring Function P.............................. 34Flicker .......................................................................................... 35Unbalance..................................................................................... 36Frequency..................................................................................... 36Current Logging ........................................................................... 36Logging Function A ..................................................................... 36Crest Factor (CF).......................................................................... 36

Power ............................................................................................... 37Measurement Theory............................................................................ 38Maintenance ......................................................................................... 42

Lithium Battery ................................................................................ 42Disposal............................................................................................ 42

Technical Specifications....................................................................... 43Logging Parameters Overview ...................................................... 43

Maximum Number of Intervals for Logging Funtion P................ 44General Information ..................................................................... 44Environmental Specifications....................................................... 45EMC ............................................................................................. 45Power Supply ............................................................................... 45Measurement ................................................................................ 46Input Voltage................................................................................ 46

Current Input with Flexi Set ......................................................... 47Current Input for Clamp ............................................................... 47General Specifications...................................................................... 48

RMS Logging Slow Voltage Variations....................................... 48Current Logging Values ............................................................... 48Events Dips, Swells, Interruptions................................................ 48Flicker .......................................................................................... 48Power P, S, |P| .............................................................................. 49Harmonics (Logging Function A Only)........................................ 49Statistics ....................................................................................... 49

Logging Function Parameters........................................................... 50Logging Values ............................................................................ 50Applications ................................................................................. 51

PQ Log PC Application Software ........................................................ 52Live Reading (Online Test) .......................................................... 53ASCII Export................................................................................ 54Timeplot Diagram ........................................................................ 55UNIPEDE DISDIP Table ............................................................. 56Cumulative Frequency Harmonics ............................................ 56

Index

7/25/2019 1745_manu

4/65

iii

List of Tables

Table Title Page

1. Symbols.............................................................................................. 42. Standard Equipment ........................................................................... 7

3. Optional Accessories.......................................................................... 74. 1745 Power Quality Logger - Controls and Indicators....................... 95. Test Leads - Markings........................................................................ 156. Measuring Ranges.............................................................................. 267. Logging Parameters - Overview......................................................... 43

7/25/2019 1745_manu

5/65

1745Users Manual

iv

7/25/2019 1745_manu

6/65

v

List of Figures

Figure Title Page

1. 1745 Power Quality Logger ............................................................... 32. 1745 Power Quality Logger - Front View.......................................... 8

3. Supplying Operating Power to the Logger ......................................... 144. Logging in a 3-Phase 4-Wire System................................................. 195. Logging in a 3-Phase 3-Wire (Delta) System..................................... 206. Single-Phase Logging ........................................................................ 217. Measuring 3 Phase Voltages in a 3-Wire (Delta)

System with Three Voltage Converters.............................................. 228. Two-Element Delta Connections ....................................................... 239. Basic Logger Setup Parameters.......................................................... 2610. Measuring Voltage Variations............................................................ 2811. Logging Min and Max Values............................................................ 2912. Voltage Interruption ........................................................................... 3013. Voltage Dips and Swells .................................................................... 3114. Measuring Flicker Values .................................................................. 3515. Live Reading (Online Test)................................................................ 5316. ASCII Export ..................................................................................... 5417. Timeplot Diagram .............................................................................. 5518. UNIPEDE DISDIP Table................................................................... 5619. Cumulative Frequency - For Voltage and Current Harmonics ........... 56

7/25/2019 1745_manu

7/65

1745Users Manual

vi

7/25/2019 1745_manu

8/65

1

1745

Power Quality Logger

Introduction

The Fluke 1745 Power Quality Logger, see Figure 1, is a sophisticated, easy-

to-use, electrical power-recording device for the electrician or power-quality

specialist.

Note

This manual also refers to the 1745 Power Quality Logger simply as

the Logger.

The Logger conatins an automatically charged 8-hour UPS (uninterruptable

power supply) battery for long-term voltage interruption ride-through, and an

LCD status display to provide confidence in setup before you leave the Loggerin place to collect data.

You can power the logger in parallel with the test leads or through an outlet.

Adapter cords for both methods of power in the Logger are included as

standard equipment.

Youll prepare the Logger for use with the included PQ Log software. You can

then connect the Logger to an electrical power-distribution network to log a

variety of power parameters, recorded as sequential averaged values over an

averaging period you can define. The Logger can measure up to three voltagesand four currents simultaneously.

Information and PC Software CD

The CD included with the Logger contains the PQ Log application software for

Windows, along with users manuals in multiple languages.

The PQ Log software prepares the Logger for use, and downloads data from

the Logger to a connected PC.You can then view the logged data in graphical

and tabular form, export it to a spreadsheet, or create reports for printing. For

details and instructions, see the PQ Log Users Manual on the CD.

7/25/2019 1745_manu

9/65

1745Users Manual

2

Logger Power Supply

The Logger does not include a power switch, but turns on automatically

whenever its power supply leads are connected to a voltage in its allowed

range. You can plug the Loggers power supply leads into a standard wall

outlet (using the included adapter cord), or you can connect them directly to

the power network under test (in parallel with the test leads) if there is no

convenient wall outlet (only if the voltage at the test leads is below 660V

RMS.)

Logging Functions

The Logger monitors power quality and locates disturbances in low andmedium voltage distribution networks. It measures up to 3 voltages and

4 currents. Logged values are saved in your choice of sequential averaging

periods. You graphically or numerically evaluated measured values with PQ

Log.

The Logger has two types of logging functions: logging function A

(Advanced) and logging function P (Power). Function A is the full set of

parameters, and function P provides logging capability optimized for load

studies and basic power logging. Function P contains every parameter inFunction A except voltage and current harmonics and interharmonics.

Logging function P allows longer logging periods because it does not save

harmonics values.

7/25/2019 1745_manu

10/65

Power Quality LoggerIntroduction

3

Logging function parameters:

RMS Voltage of each phase (average, min, max)

RMS Current of each phase and neutral (average, min, max)

Voltage events (dips, swells, interruptions)

Power (kW, kVA, kVAR, Power PF, Power tangent)

Energy, total energy

Flicker (Pst, Plt)

Voltage THD

Current THD

Current CF

Voltage harmonics to the 50th

(not in P function) Voltage interharmonics (not in P function)

Mains signalling voltage

Unbalance

Frequency

L1 A

L2 B

L3 C

LOGGINGSTATUS

CURRENTINPUT

10VRMSMAX5VA45-65Hz

SUPPLYINPUT

100-350V

660V MAX88-660V

VOLTAGEINPUT

600VCAT300V CAT

T

RS232

POWERQUALITYLOGGER

1745

830V 480V MAXL-L L-N/

START/STOP

/

egc001.eps

Figure 1. 1745 Power Quality Logger

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

7/25/2019 1745_manu

11/65

1745Users Manual

4

Symbols

Table 1 lists the symbols used on the instrument and in this manual.

Table 1. Symbols

Symbol Description

W Important information. See the manual.

X Hazardous voltage.

Earth ground.

T Double insulation.

F Direct Current (DC).

P Conforms to European Union requirements

)Canadian Standards Association is the certified body used

for testing compliance to safety standards.

~ Do not dispose of this product as unsorted municipal waste.Contact Fluke or a qualified recycler for disposal.

; Conforms to relevant Australian Standards.

Safety Instructions

Please read this section carefully. It will make you familiar with the most

important safety instructions for using the Logger.

Warnings identify conditions and actions that pose safety hazards to theuser and Cautions identify conditions and actions that can damage theLogger.

7/25/2019 1745_manu

12/65

Power Quality LoggerSafety Instructions

5

XWarnings

To avoid electrical shock, do not connect any part ofthe Logger to systems that have higher voltages to

ground (earth) than are marked on the Logger.

Areas between the power company meter and thesource of the distribution system are characterized asCAT IV areas. To avoid electrical shock or equipmentdamage, never connect the Logger to power in CAT IVareas if the voltage-to-earth ground is greater than300 V.

To avoid damaging the Logger, never connect itsvoltage measuring inputs to phase-to-phase voltages

higher than 830 V.

To avoid damaging the Logger, never connect thepower supply leads to voltages higher than 660 V-RMSAC.

The Logger is to be used and handled only by qualifiedpersonnel (see page 8).

Maintenance work on the Logger must be done only byqualified service personnel.

Use only the current probes specified in this manual. Ifyou use flexible current probes, wear suitableprotective gloves or work on de-energized conductors.

Do not expose the Logger to moisture or humidity.

To prevent electrical shock, always connect powersupply and voltage test leads to the Logger beforeconnecting to the load.

All accessories must be approved for 600 V CAT III orhigher.

Use the Logger only with its original standardequipment or with approved optional accessories, as

listed in Table 2 and Table 3 in this manual.

7/25/2019 1745_manu

13/65

1745Users Manual

6

Connect clip-on current transformers and/or Flexi Setto insulated live conductors only.

If measuring sensors are to be connected to non-insulated live conductors, additional personalprotective measures must be taken as required by localgovernment agencies.

Caution

To avoid damage, use the 1745 Power Quality Logger, onlywith the following nominal voltages:

Single/3 phase, 4-wire (Wye) systems (P-N): 69 V to480 V

3-phase-3-wire(Delta) systems (P-P): 120 V to 830 V

XWarning

To avoid electrical shock, or damaging the Loggersinternal protective circuitry weatherproof seal, do not openthe Logger.

Qualified Personnel

The following qualifications are required for using the Logger safely:

Trained and authorized to switch on/off, ground (earth), and mark

power distribution circuits and devices in accordance with electrical

engineering safety standards.

Trained or instructed in safety engineering standards for maintainingand using appropriate safety equipment.

Trained in first aid.

Standard Equipment and Optional Accessories

Table 2 lists the standard equipment for the 1745 Power Quality Logger and

Table 3 lists optional accessories.

7/25/2019 1745_manu

14/65


7

Table 2. Standard Equipment

Equipment Model/Part

Number

Power Quality Logger 1745

International IEC Power Plug Adapter Set 2441372

RS232 Cable, Red, Null-Modem 2540511

Shielded 4-Phase Flexi Set (15 A/150 A/1500 A/3000 A) FS17XX

Dolphin Clip, Black (4x) 2540726

Color Coding Wire Clips WC17XX

Soft Case 2715509

English Users Manual 2560366

CD with Users Manual (English, German, French, Spanish,

Portuguese, Simplified Chinese, Italian), and PQ Log

software (same languages as the manual)

2583507

Power cord adapter for parallel connection to test leads 2651702

Power cord 2715492

USB Adapter 2539565

Table 3. Optional Accessories

Description Accessory

3-Phase Flexi Set MBX 3FLEX

3-Phase 1 A/10 A micro CT EPO405A

C425 Hardcase 2654865

Permlink Software for Modem E631820090

3-Phase Voltage Leads 2645854

Inspect the contents of the shipping box for completeness and damage. Report

any damage, to the shipper.

7/25/2019 1745_manu

15/65

7/25/2019 1745_manu

16/65


9

Table 4. 1745 Power Quality Logger - Controls and Indicators

Item Name Description

1Connector forLogger powersupply.

This is where the power cord attaches to theLogger. The power cord connects in parallelto any two test leads as long as the voltageis below 660 V absolute maximum.Whenever there is any risk that voltagecould be higher, connect the power cord to awall outlet using the appropriateinternational power plug (supplied).

Power supply voltage range: 88-660 V AC or100-350 VDC, 50 Hz / 60 Hz, 600 V CAT III.

2

START/STOP switch The START/STOP button is used to start or

end switch-operated logging sessions.

3 LCD status display Shows measured input values to provideconfidence in proper setup and test leadconnections. Every 3 seconds, the displaychanges to the next set of readings in thefollowing sequence:

1. The three voltage levels

2. The main three phase currents

3. Neutral current and real-time clock

4. Active (true) power on each phase

The cycle repeats continuously. Make surethe readings look reasonable before leavingthe Logger to collect data.

4 Power supply leadsand 3-phase plusneutral voltage testleads

Fixed installed voltage input cables for L1 orA, L2 or B, L3 or C, N.

The highest permissible nominal voltage is830 V in a 3-wire network with Deltaconnection.

In a 4-wire network with Wye connection,the highest permissible nominal voltage is480 V.

When using PTs and CTs for measuringvoltage and current in a medium-voltagenetwork, refer to the IEC 60044 internationalstandard for guidelines.

7/25/2019 1745_manu

17/65

1745Users Manual

10

Table 4. 1745 Power Quality Logger - Controls and Indicators (cont)

Item Name Description

5 Connector for FlexiSet or currentclamps

Flexi sets or current clamps are detectedautomatically at power-up. If you change thecurrent probe type, be sure to remove andrestore power so the Logger will detect thenew current probe.

Nominal ranges for the Flexi Set are 15 A,150 A, 1500 A, and 3000 A AC. Nominalinput for current clamps is 0.5 V.

6 RS232 interface port The serial RS232 interface is used tocommunicate with a PC. The Logger isconnected to the PCs serial port (or amodem for remote communication) usingthe interface cable. Use a USB adapter ifnecessary.

7 Logging Status LED Yellow blinking = Logging job not set up yet,or waiting for start time or START button.

Green blinking = logging is in progress

Steady green = Logging session is finished.Data are ready to upload to a PC.

8 Channel LEDs The logging channel LEDs indicate

whether the applied voltages are within the

nominal range set using the PQ Log

software.

Red = Overload

Green = OK

Yellow = Underload(There is no detection for the current input)

7/25/2019 1745_manu

18/65


11

Power Network Configurations

You can set up the Logger to work with several power network configurations

(listed below). You make these settings using PQ Log software while

connected to the Logger using the interface cable. See the PQ Log UsersManual for details.

Delta system

Delta 2 element system (2 voltage/current transformer)

Wye (Star) system

Single phase

Split single phase

Working with Logged Data

See the PQ Log manual for full details. Logged data can be evaluated using the

PQ Log software to provide the following:

Amount, date/time, and duration of quick and slow voltage variations

Half-cycle: 10 ms-extreme values for 50 Hz (8.3 ms at 60 Hz) MIN

and MAX for each measuring interval

Depth and duration of voltage dips

Correlation between peak current and voltage dips

95 %-flicker values according to EN50160

Number and duration of interruptions

Compliance of harmonic levels with defined limits

Mean and peak values of phase currents

Value of neutral conductor current

Current total harmonic distortion (THD) of phase and neutral

conductor currents

Profile of active, reactive, and apparent power versus time

Monitoring of power factor (PF) and information about effectiveness

of compensation systems

Graphical representations of logging data and statistics

7/25/2019 1745_manu

19/65

1745Users Manual

12

Using the 1745 Power Quality Logger

This section explains how to operate the 1745 Power Quality Logger. You

should also refer to the PQ Log Users Manual to become familiar with thesoftware you use to prepare the Logger for use and download logged data.

A typical logging session includes four steps:

1. Preparing the Logger for use with the PQ Log software.

2. Installing the Logger at the logging site.

3. Leaving the Logger to collect data for a period.

4. Downloading and evaluating the logged data.

These steps are described in the following pages.

About Logging Jobs

Logging jobs are defined using the PQ Log software, and transferred to the

Logger over the RS-232 cable. Each job contains the following information:

Logging function P or A

Measuring period, defined by start and end times

Time activated, switch or immediate job

Nominal voltage

Power type (wye, delta, etc.)

Averaging period length

Logging time period

Interharmonics and signaling voltages Limit values for events

Memory model for events: circular (first-in/first-out, continuous), or

linear (quit logging when logging period is finished)

Logging of current - neutral wire

Optional converter ratios for current and voltage if using potential

transformers (PTs) and current transformers (CTs) at a medium-

voltage network site

7/25/2019 1745_manu

20/65

Power Quality LoggerUsing the 1745 Power Quality Logger

13

Preparing the Logger for Use

Prepare the 1745 Logger for use with PQ Log software as follows (see

Figure 3):

1. Connect the Logger to line power. Use the power supply cables to

connect to an outlet, or to the test leads phase and neutral for Wye

configurations, or any two-phase leads for delta.

Caution

If you are powering the Logger in parallel with the testleads, and the voltage under test at the Logger power

supply connections could be greater than 660 V RMS AC,plug the power supply leads into an outlet instead.Otherwise, you could damage the Logger.

2. Connect the RS232 interface cable to the serial port of your PC. Use a

USB adapter if your PC does not have a serial port.

3. Run the PQ Log software as described in the PQ Log Users Manual.

4. Set up the Logging job and transfer the settings to the Logger.



7/25/2019 1745_manu

21/65

7/25/2019 1745_manu

22/65

7/25/2019 1745_manu

23/65

7/25/2019 1745_manu

24/65


17

Use the Logger only with its original standardequipment or with approved optional accessories aslisted in Table 2 and Table 3 in this manual.

Connect clip-on current transformers and/or Flexi Setto insulated live conductors only.

If measuring sensors are to be connected to non-insulated live conductiors, additional personalprotective measures must be taken as required by localgovernment agencies.

Caution

To avoid damage, use the 1745 Power Quality Logger onlywith the following nominal voltages:

Single/3-phase 4-wire (Wye) systems (P-N): 69 V to 480 V

3-phase-3-wire (Delta) systems (P-P): 120 V to 830 V

XWarning

To avoid electrical shock, or damaging the Loggersinternal protective circuitry or weatherproof seal, do notopen the Logger.

7/25/2019 1745_manu

25/65

7/25/2019 1745_manu

26/65


19

Connections in 3-Phase 4-Wire (Wye) Systems

Figure 4 shows the connections for logging 3-phase 4-wire (Wye) systems:

L1 A

L2 B

L3 C

LOGGING STATUS

CURRENT INPUT

10VRMSMAX5VA45-65Hz

SUPPLY INPUT

100-350V

660V MAX88-660V

VOLTAGE INPUT

600VCAT300V CAT

T

RS232

POWERQUALITYLOGGER

1745


START/ STOP

/

L1 L2 L3 N

Power Supply

egc003.eps

Figure 4. Logging in a 3-Phase 4-Wire (Wye) System

7/25/2019 1745_manu

27/65

1745Users Manual

20

Connections in 3-Phase 3-Wire (Delta) Systems

Figure 5 shows the connections for logging 3-phase 3-wire (Delta) systems.

The test lead N can be left open or connected to ground potential.

L1 A

L2 B

L3 C

LOGGINGSTATUS

CURRENTINPUT

10VRMSMAX5VA45-65Hz

SUPPLYINPUT

100-350V

660V MAX88-660V

VOLTAGEINPUT

600VCAT300V CAT

T

RS232

POWERQUALITYLOGGER

1745


START/STOP

/

L1 L2 L3 N

Power Supply

egc004.eps

Figure 5. Logging in a 3-Phase 3-Wire (Delta) System

7/25/2019 1745_manu

28/65


21

Connections for Single-Phase Logging

Figure 6 shows the connections for logging single-phase logging systems:

L1 A

L2 B

L3 C

LOGGING STATUS

CURRENT INPUT

10VRMSMAX5VA45-65Hz

SUPPLY INPUT

100-350V

660V MAX88-660V

VOLTAGE INPUT

600VCAT300V CAT

T

RS232

POWERQUALITYLOGGER

1745


START/ STOP

/

L1

Power Supply

N

L3

L2

egc005.eps

Figure 6. Single-Phase Logging

7/25/2019 1745_manu

29/65

1745Users Manual

22

Connections for Medium Voltage Networks

In a 3-phase 3-wire (Delta) system with three separate voltage converters and

three current transformers, the Logger can measure phase-phase (P-P, Delta) or

phase - N (P-N, Wye). See Figure 7.

L1 A

L2B

L3 C

LOGGING STATUS

CURRENT INPUT

10VRMSMAX5VA45-65Hz

SUPPLY INPUT

100-350V

660V MAX88-660V

VOLTAGE INPUT

600VCAT300V CAT

T

RS232

POWERQUALITYLOGGER

1745


START/ STOP

/

L1

Power Supply

L2

L3

N

L1

L1

L2

L2

L3

L3

egc006.eps

Figure 7. Measuring 3 Phase Voltages in a 3-Wire (Delta) System withThree Voltage Converters

7/25/2019 1745_manu

30/65

7/25/2019 1745_manu

31/65

7/25/2019 1745_manu

32/65


25

2. Remove the test leads of the three phases. Be sure to remove the

measuring cable of the neutral wire last.

3. Remove the current probes.

Evaluating the Logged Data

Youll use PQ Log to evaluate the logged data. Data can be read out during

logging as well as at the end.

1. Connect the Logger to line power.

2. Connect the RS232 interface cable to your PCs serial port, then to the

Logger.3. Start the PQ Log software.

4. Use PQ Log to transfer the data from the Logger to the PC.

5. Once the data is transferred, remove the RS232 interface cable and

operating power from the Logger.

6. Evaluate the data using PQ Log.

For details, refer to the PQ Log manual.

Methods of Logging

The following section describes methods of logging using the 1745 Logger.

7/25/2019 1745_manu

33/65

7/25/2019 1745_manu

34/65

7/25/2019 1745_manu

35/65

7/25/2019 1745_manu

36/65


29

Min/Max Values

Logging detects the highest and lowest voltage RMS values and the highest

current RMS value during the test interval, using a minimum resolution of

10 ms.

The response time can be set in PQ Log to the following:

0.5, or 1 line power period

200 ms

1, 3, or 5 seconds.

Figure 11 shows the logging min and max values of the Logger.

U

t

Max. Value

Min. Value

Measuring Interval

egb017.eps

Figure 11. Logging Min and Max Values

7/25/2019 1745_manu

37/65

7/25/2019 1745_manu

38/65

7/25/2019 1745_manu

39/65

1745Users Manual

32

Current Harmonics

Current harmonics are defined as current components that have a frequency

that is an integer multiple of the fundamental frequency of the line power

current. Logging function A records ech individual harmonic of the phase

currents and the neutral current, up to the 50thorder, and presents the

harmonics as absolute values. The values are averaged over the interval length

defined in PQ Log.

Mains Signaling

Voltage components that have frequencies hat are not integer multiples of the

fundamental frequency of the line power voltage are called Mains Signalingvoltages or ripple-control voltages (interharmonics). The Logger can be

programmed to record up to five interharmonics with a resolution of 5 Hz. This

function can also be used to monitor ripple-control signals by entering the

signal frequency of the local utility.

The Logger measures the three second RMS value of each interharmonic and

establishes statistics for EN50160 (European standard) evaluation. These

statistics are available after a minimum recording time of 24 hours, or after

regular termination of the measuring job and can be exported from PQ Log andevaluated later.

Additionally, the Logger provides a long term recording of the interharmonics.

You can select from the following special measurement methods in the PQ

Log software:

200 ms maximum value (recommended for estimating ripple-control

signal levels)

200 ms minimum value 3 seconds maximum value

Average value over interval

In PQ Log, the frequency can be entered with a resolution of 0.5 Hz, but for

evaluation, the values are corrected to a bandwidth of 5 Hz. One frequency can

be defined for each band: for example, for a ripple-control signal of 183 Hz,

the values will be corrected to 185 Hz). Interharmonics of voltages and

currents with these frequencies are recorded.See the PQ Log manual for details.

7/25/2019 1745_manu

40/65


33

THD V In Function A

Function A:

1

50

2

2

V

V

VTHDn n==

Vn:RMS value of harmonic frequency #n.

V1:RMS value of the fundamental frequency.

THDV: total contents of harmonics of the line power voltage as a percentage

of the fundamental.

This algorithm is according to EN 61000-4-7.THD of currents:

Function A: 1

50

2

2

I

I

THDIn

n=

=

and ( ) =

=

50

2

2

n

nIATHDI

In: RMS value of harmonic frequency #n.

I1: RMS value of the fundamental frequency.

THDI: total contents of harmonics of the current as a percentage of the

fundamental.



7/25/2019 1745_manu

41/65

7/25/2019 1745_manu

42/65


35

Flicker

Flicker is the visual impression of unsteadiness in a light source whose

luminance or spectral distribution changes over time. Flicker, see Figure 14, is

logged in accordance with the IEC 61000-4-15 standard. The short-term (st)flicker Pstis logged over a default standard interval of 10 minutes, and is used

to calculate the long-term (lt) flicker Pltby taking the sliding average of 12

short term values. The interval value can be changed as needed in PQ Log.

Formula for Plt Function

312

1

3

12=

=

i

PstPlt

Time

Flicker [%]

Interval length => 1 Pst

12 x interval length => 1 flicker value Plt

egb020.eps

Figure 14. Measuring Flicker Values

7/25/2019 1745_manu

43/65

1745Users Manual

36

Unbalance

The ratio of negative-to-positive-sequence harmonics is calculated with the

angles and magnitudes of the phase voltages taken into account. These values

are averaged over the interval length defined in PQ Log.

Frequency

The line power frequency is measured and averaged over 10 seconds and the

resulting values are divided into 42 classes for establishing statistics. Values

are also averaged over the interval length defined in PQ Log.

Current Logging

The maximum values of the currents (L1 or A, L2 or B, L3 or C and N) are

measured, and the interval value of the current is calculated using the mean

value over the RMS values of the interval defined in PQ Log.

Logging Function A

If a 3-phase current sensor is connected, the neutral current is calculated on asample basis from the phase currents. If a 3-phase+N sensor is detected, you

can select between logging and calculating the neutral current in PQ Log.

Ipeak

The peak values of the current (samples, not RMS values) are averaged in the

PQ Log software over the predefined measuring interval.

Note

Short peak values do not contribute much to the average value and so Imaxcan

be higher than Ipeak.

Crest Factor (CF)

The crest factor (CF) of the currents (L1 or A, L2 or B, L3 or C, and N) is the

ratio of current peak value divided by current RMS value, and is averaged over

the interval length defined in PQ Log. For sinusoidal signals, CF = 1.41, andfor square waves, CF =1.00

7/25/2019 1745_manu

44/65


37

Power

The power values (L1 or A, L2 or B, L3 or C and N) are averaged over the

interval length, and the maximum value of each is recorded.

The response time can be set to 1 second or 1 minute, and is independent of the

response time for voltage and current.

In logging function P, the active power, apparent power, and reactive power of

the phases and total power of all three phases is calculated.

Logging function A also calculates the distorting power D of the phases and

Dtotal.

7/25/2019 1745_manu

45/65

7/25/2019 1745_manu

46/65

Power Quality LoggerMeasurement Theory

39

11 PPh bas =

Active power of logginginterval per phase =

=

M

jjbasP

MP

1

1

Pbas jto 200 ms value

M: Number of 200 ms intervals per logging

intervals

Total active power on all

three phases ==

3

1kktotal PP

Pk: Active power of the phase

k: Phase (k = 1, 2, 3)

Absolute value of the

active power per interval

per phase

=

=

M

jjbasbetr

PM

P1

1

Sum of the absolute

values of the active

power on all three phases

=

++=

M

j

basbasbastotalbetrPPP

MP

1321

1

Apparent power based on

RMS values of voltage

and current. Basic values

on 200 ms per phase

basbasbas IVS .=

Apparent power per

logging interval per phase

=

=

M

jjbas

SM

S1

1

Sbas j: 200 ms value

M: Number of 200 ms intervals per loggingintervals

7/25/2019 1745_manu

47/65

1745Users Manual

40

Total apparent power on

three phases

=

=

3

1K

ktotal SS

k: Phase (k = 1, 2, 3)

Distortion power. Basic

value on 200 ms per

phase

222

basbasbasbas QPSD =

Distortion power per

interval per phase ==

M

j jbas

DM

D1

1

Dbas j: 200 ms value

M: Number of 200 ms intervals per logging interval

Total distortion power on

three phases=

=

3

1k

ktotal DD

Distortion power per

phase Q

Q

S

PPF ==

Total distortion power on

three phases total

total

total

total

totaltotalQ

Q

S

PPF ==

Tangent per phase

P

Q=tan

Total tangent on three

phasestotal

totaltotal

P

Q=tan

Active power of the

fundamental per phase

Basic value for 200 ms

11 PPh bas =

7/25/2019 1745_manu

48/65

7/25/2019 1745_manu

49/65

1745Users Manual

42

Maintenance

Caution

Maintenenca work on the done only by trained andqualified personnel at a company approved service centerwithin the warranty period.

With the proper use, the Logger does not require special maintenance other

than periodic calibration at a Flukecalibration center.

If the Logger gets dirty, wipe it off carefully with a damp cloth without

cleaning agents.

Lithium BatteryThe 1745 Logger contains a vanadium pentoxide lithium rechargeable battery

and a sealed gel-type, lead-acid battery. These batteries are automatically

recharged during normal operation. Neither one is user-servicable.

Disposal

If you discard the Logger, you must recycle it at an appropriate recycling

center as required by local regulations.
http://www.fluke.com/http://www.fluke.com/http://www.fluke.com/

7/25/2019 1745_manu

50/65

Power Quality LoggerTechnical Specifications

43

Technical Specifications

Logging Parameters OverviewTable 7 shows an overview of the logging parameters.

Table 7. Logging Parameters - Overview

Measuring Function P A

Voltage: mean, min, max

values

Current: Mean, max-values

Neutral current N

Voltage events

Power: P, |P|, S, D, PF,

tangent

Power total P, |P|, S, D, PF,

tangent

Energy

Flicker: Pst, Plt

Voltage harmonics

Current harmonics (L1 or A,

L2 or B, L3 or C, N,

up to 50thorder)

Interharmonics, ripple-control

signals

THDV (voltage)

THDI (current)

CF (crest factor current)

Unbalance

Frequency



7/25/2019 1745_manu

51/65

7/25/2019 1745_manu

52/65

7/25/2019 1745_manu

53/65

1745Users Manual

46

Memory model Linear or circular, user-selectable

Interface RS-232, 9600 to 115.000 Baud, automatic selection,

3-wire communication.

Dimensions 170 mm x 125 mm x 55 mm

Weight Approx. 0.9 kg

MeasurementA/D converter 16 bit

Sampling frequency 10.24 kHz

Anti-aliasing filter FIR-Filter, fC = 4.9 kHz

Frequency response Uncertainty < 1 % of Vm for 40 Hz to 2500 Hz

Interval length 1, 3, 5, 10, or 30 seconds,

1, 5, 10, 15, or 60 minutes

Averaging time for

min/max values

, 1 line power period, 200 ms

1, 3, 5 s

Time base Resolution: 10 ms (at 50 Hz) deviation: 2 s/day at23C.

Input Voltage

Input range VIP-N: 69, 115, 230, or 480 V AC

Input range VIP-P 120, 200, 400, or 830 V AC

Max. overload voltage 1.2 VI

Input range selection Automatically set by user-entered nominal voltagevalue.

Connections P-P or P-N, 1- or 3-phase

Nominal voltage VN 999 kV (using PTs and ratios)

Input resistance Approx. 820 keper channel. Lx-N Single phase

(L1 or A, L2 or B, L3 or C connected): app. 300 ke

Intrinsic uncertainty 0.1 % of VI

Voltage transformer Ratio : < 999 kV / VI

Ratio selection Optional: user-selectable

7/25/2019 1745_manu

54/65


47

Current Input with Flexi Set

Input ranges IIL1 or A, L2

or B, L3 or C, N:

15, 150, 1500, or 3000 A AC

Measuring range 0.75 A to 3000 A AC

Intrinsic uncertainty < 2 % of II

Position influence Max. 2 % of m.v. for distance conductor to

measuring head >30 mm

Stray field influence 200 mm

Temperature coeff < 0.005 % / K

Current transformer Ratio : 999 kA / II

Ratio selection Optional: user-selectable

Connection Power type selectable in PQ Log

Current Input for Clamp

Input signal: 0.5 V AC nominal (for II) 1.4 V peak

Intrinsic uncertainty < 0.3 % of II

Max. overload 10 V AC

Input resistance App. 8.2 ke

Current transformer Ratio : 999 kA / II

Ratio selection By job programming

7/25/2019 1745_manu

55/65

7/25/2019 1745_manu

56/65


49

Power P, S, |P|

Active power P As per EN 61036, class 2

Distorting power D As per EN 61268, class 2 (A-version only)

Max value Highest value per interval

Min value Smallest value per interval

Phase uncertainty < 0.3 degrees

Conditions Conductor centered within clamp jaws or

Flexi Set.

Harmonics (Logging Function A Only)

Vm, Im, THDV, THDI per IEC/EN 61000-4-7, class B

Voltage harmonics (function A)

intrinsic uncertainty:

For Vm < 3 % VN: < 0.15 % VN

For Vm3 % VN: < 5 % Vm

Current harmonics (function A)

Intrinsic uncertaintyi

For Im< 10 % IN: < 0.5 % IN

For Im

10 % IN: < 5 % Im

THD V (function A) intrinsic

uncertainty at VN

For THD V < 3 %: < 0.15 %

For THD V 3 %: < 5 %

THD V (function P) intrinsic

uncertainty at VN

For THD V < 3 %: < 1 %

For THD 3 %: < 5 %

THD I (functions A, P) intrinsic

uncertainty at II

For THD I < 3 %: < 2 %

For THD I 3 %: < 5 %

Statistics

Frequency 42 classes for 10 s mean values

Ripple-control signals.

Interharmonics 21 classes for 3 s mean values.

Analysis of logging dataProgramming and analysis is done by PQ Log software on PC.

7/25/2019 1745_manu

57/65

7/25/2019 1745_manu

58/65

7/25/2019 1745_manu

59/65

1745Users Manual

52

PQ Log PC Application Software

PQ Log for PCs is the application for use with the 1745 Power Quality

Logger. The data are also available in ASCII format.Programs available for setting up the Logger:

Averaging period length

Memory model

Nominal voltage

Response time for min, max values

Power type (wye, delta, etc.)

Thresholds for event detection, interruptions

Setup:

Internal clock (date/time)

Assign 1745 Power Quality Logger instrument name

Parameters for data export

Software updates

Analysis:

ASCII data export

Graphical summary of all EN50160 parameters

Live reading viewing

7/25/2019 1745_manu

60/65

Power Quality LoggerPQ Log PC Application Software

53

Live Reading (Online Test)

Figure 15 shows a typical display of online test:

egb024.bmp

Figure 15. Live Reading (Online Test)



7/25/2019 1745_manu

61/65

1745Users Manual

54

ASCII Export

Figure 16 shows a typical display of ASCII export.

egb025.bmp

Figure 16. ASCII Export

For special cases, additional evaluations are available:

Graphic representation of measured data

Timeplot diagrams

Application oriented analysis

Logging value list

Table of events (UNIPEDE DISDIP)

Table summary

Cumulative frequency, harmonics (Logging Function A only)

Statistical values

All exceeding table

Most critical values

7/25/2019 1745_manu

62/65

7/25/2019 1745_manu

63/65

7/25/2019 1745_manu

64/65

7/25/2019 1745_manu

65/65

Documents

1745_manu